灾害学Issue(4)：183-191,9.DOI:10.3969/j.issn.1000-811X.2014.04.034
GIS支持下基于AHP方法的2013年芦山地震区滑坡危险性评价
GIS-based Landslide Hazard Evaluation Using AHP Method in the 2013 Lushan Earthquake Region
摘要
Abstract
Based on the detailed review on the basis of domestic and foreign research progress on landslide hazard evaluation,the paper selected a great extend square area of 100 km ×100 km that centered around the epi-center as the study area in Lushan earthquake region.With GIS technology as a platform and combined with the feature of Lushan earthquake determined earthquake landslide impact factors for classification;analyzing the rela-tionship between the represented area after a generalized assignment of the six impact factors on elevation,slope, aspect,curvature,lithology,and PGA after the distribution of landslides;zonal area percentage and landslide den-sity index was used to measure the influence degree of various influence factors from earthquake landslide.Second-ly,Using the method of AHP set up six relation matrix by six impact factors comparing the two for comprehensive analyzing each parameter weight;the influence factor weight distribution curve analysis results showed that PGA is the most serious factor affecting earthquake landslide and PGA >lithology >slope >elevation >curvature >aspect is a relationship of impact factor to measure the influence degree of landslide Lushan earthquake region;Taking the average of six sets data as the final factor weight to build the landslide hazard threshold grid graph in the study area,and then dividing landslide hazard threshold grid graph into extremely high hazard zone,high hazard zone,middle hazard zone,low hazard zone,extremely low hazard zone which correspond the classification and as-signment of evaluation factor;simultaneously,landslide hazard zoning map of the study area was provided.Finally, the rationality of the evaluation results was verified according to the landslide hazard evaluation results test curve of the actual triggered by Lushan earthquake landslide;Verification results showed that the value of AUC is percent 85.41 ,the accuracy of quantitative measure of landslide evaluation result for percent 85.41 implied that the evalua-tion results accuracy is higher.关键词
芦山7.0级地震/滑坡/层次分析法/GIS/危险性评价Key words
Lushan M7.0 earthquake/landslide/Analytical Hierarchy Process (AHP)/GIS/hazard evalua-tion分类
天文与地球科学引用本文复制引用
刘丽娜,许冲,徐锡伟,陈剑..GIS支持下基于AHP方法的2013年芦山地震区滑坡危险性评价[J].灾害学,2014,(4):183-191,9.基金项目
国家自然科学基金项目（41202235）；中国地震局2013年“4．20”芦山地震科考 （）
